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1. (WO2017038320) Li-CONTAINING SILICON OXIDE POWER AND METHOD FOR PRODUCING SAME

Pub. No.:    WO/2017/038320    International Application No.:    PCT/JP2016/071981
Publication Date: Fri Mar 10 00:59:59 CET 2017 International Filing Date: Thu Jul 28 01:59:59 CEST 2016
IPC: H01M 4/485
H01M 4/36
Applicants: OSAKA TITANIUM TECHNOLOGIES CO.,LTD.
株式会社大阪チタニウムテクノロジーズ
Inventors: TAKESHITA Kohki
竹下 浩樹
KIZAKI Shingo
木崎 信吾
KASHITANI Yusuke
柏谷 悠介
Title: Li-CONTAINING SILICON OXIDE POWER AND METHOD FOR PRODUCING SAME
Abstract:
Provided is a method for producing a Li-containing silicon oxide powder that comprises crystallized lithium silicate, that is mostly water-insoluble Li2Si2O5, and that comprises little crystalline Si. To this end, a powdered lithium source is finely ground when mixing the powdered lithium source and a low-grade silicon oxide powder represented by the compositional formula SiOx (0.5 < x < 1.5). The median diameter D1 of the low-grade silicon oxide powder and the median diameter D2 of the powdered lithium source satisfy 0.05 ≤ D2/D1 ≤ 2. The mixed powder is fired at 300-800 °C.